<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>select下拉表单</title>
  </head>
  <body>
    <form>
      籍贯:
      <!-- <select>标签中，至少包含一个<option>标签 -->
      <select>
        <option>山东</option>
        <option>北京</option>
        <option>天津</option>
        <!-- selected属性代表默认选中 -->
        <option selected="selected">火星</option>
      </select>
    </form>
  </body>
</html>
